Grandstream Networks GXV34 0 Series Manual page 40

Sets the SDP bandwidth attribute. It can be selected from the drop-down list. The default setting is
"Media Level".
● Standard: use AS format in session level; use TIAS format in media level
SDP Bandwidth
● Media Level: use AS format in media level.
Attribute
● Session Level: use AS format in session level.
● None: no modifications in the session format.
Note: Please do not modify this setting without knowing the session format supported by the server.
Otherwise, it might cause video decoding failure.
Specifies the H.264 codec message payload type format. The default setting is 99.
H.264 Payload Type
The valid range is from 96 to 126.
If set to "Yes", the device will be able to receive the presentation stream in video calls and video
Enable BFCP
meetings.
Initial INVITE with
Initial INVITE SDP contains presentation media.
Media Info
Presentation H.264
Selects the H.264 image size. Users can select 1080P or 720P.
Image Size
Select the Presentation H.264 Profile Type from "Baseline Profile", "Main Profile", "High Profile" and
"BP&MP&HP". The default setting is "BP&MP&HP".
Presentation H.264
The lower the profile type is, the easier the packet can be decoded. However, higher level has high
Profile Type
compression ratio. For device with low CPU, select "Baseline Profile" to play record; "Baseline Profile"
is more likely to be used in a video conference that has high demanding for the video quality. Select
among the three types to achieve best video effect.
Configures the bit rate of the video. The video bit rate can be adjusted based on the network
Presentation Video Bit
environment. Increasing the video bit rate may improve video quality if the bandwidth is permitted.
Rate
If the bandwidth is not permitted, the video quality will decrease due to packet loss. Video Bit Rate
can be set to integer value from 512kbps to 2048kbps.
Presentation Video
Configure the video frame rate for presentation.
Frame Rate
Defines the transport protocol used for BFCP. Users can choose from Auto/UDP/TCP. The default
BFCP Transport
setting is "UDP" first, if not supported, then choose "TCP". If choose "Auto", automatically switches
Protocol
between "UDP" and "TCP".
Sets if the phone system will enable the SRTP (Secured RTP) mode. It can be selected from
dropdown list:
● Disable
● Enabled but not forced
SRTP Mode
● Enabled and forced
SRTP uses encryption and authentication to minimize the risk of denial of service. (DoS). If the server
allows to use both RTP and SRTP, it should be configured as "Enabled but not forced". The default
setting is "Disable".
Presentation Settings
RTP Settings